That makes quite a bit of sense also, tho restaurants only make a small fraction of Yelp's total reviews, yes they are the biggest single category but they are not anywhere close to being a majority.
I still think that it makes more sense for a C2C/B2C group to buy them which aren't focused on specific industries, and i do see Chinese and Indian tech/business giants aiming to own western companies a core strategy for their future.
Priceline owns OpenTable and Yelp could be an interesting way to build out more reviews and get more restaurants using OpenTable.